What are the opening hours?

Monday 10am - 4pm Tuesday 10am - 4pm Wednesday 10am - 4pm Thursday 10am - 4pm Friday 10am - 4pm Saturday 10am - 5pm Sunday 10am - 5pm

Long Island Aquarium

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Riverhead, NY
Long Island Aquarium

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There's so much to see, do, and explore at Long Island Aquarium! One of Long Island's most fin-tastic destinations! Hours: 10:00am to 5:00pm year-round.
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This full-scale Aquarium features one of the largest all-living coral reef displays in this hemisphere; a 120,000-gallon shark tank, year-round sea lion shows, numerous touch tanks, and more than 100 exhibits and interactive experiences, including Shark Dive, Pirate Snorkel Adventure, Atlantis Explorer Tour Boat, Sea Lion Kiss and the beautiful butterfly garden! Closed Thanksgiving and Christmas Days. Visit our Web site for more details: www.LongIslandAquarium.com

10/30/2026

Once a witch owl-ways a witch! 🦉🔮🧹💜

Join us for the last weekend of our Not-So-Spooky Haunted Tree House! 👻 Enjoy unlimited time on the Haunted Tree House, Animal Interaction, Candy Bags, Pumpkin Decorating, Halloween Sand Art and Halloween Color-A-Button. Warm up with hot cocoa and festive treats available for purchase at Scoops Ice Cream Shop!

Tonight & Saturday night from 7pm-9pm
Price: $25*/pp (Members save 10%) One parent free with a paid child.
Children MUST be accompanied by an adult.
This activity is perfect for kids ages 3-11.

Entrance to this activity will be at the back of the Aquarium, behind the Hyatt Place Hotel at the Scoops Ice Cream Shop within the Treasure Cove Resort Marina. There is parking at the marina.

Learn more at: longislandaquarium.com/experiences/haunted-tree-house/

10/29/2026

Happy National Cat Day! 😸🎃

10/28/2026

Hoo's getting excited for H-owl-ween? 🦉🎃

10/27/2026

Did you know that of the roughly 2,000 species of sea jellies known to science, only about 70 are harmful to humans? 🪼

10/26/2026

Did you know moray eels have a second set of jaws, called pharyngeal jaws, which they use to help swallow their prey?

10/25/2026

Don’t miss the final nights of our Haunted Tree House! This Friday & Saturday are your last chances to enjoy this spooktacular experience! 🎃

Enjoy unlimited time on the Haunted Tree House, Animal Interaction, Candy Bags, Pumpkin Decorating, and a Halloween Color-A-Button. Warm up with hot cocoa and festive treats available for purchase at Scoops Ice Cream Shop!

This Friday & Saturday from 7pm-9pm
Price: $25*/pp (Members save 10%) One parent free with a paid child.
Children MUST be accompanied by an adult.
This activity is perfect for kids ages 3-11.

Entrance to this activity will be at the back of the Aquarium, behind the Hyatt Place Hotel at the Scoops Ice Cream Shop within the Treasure Cove Resort Marina. There is parking at the marina.

Learn more at: longislandaquarium.com/experiences/haunted-tree-house/

10/24/2026

Time to get spooky! We hope to see you all at our Bats, Barnacles, & Broomsticks Halloween Party today! 😈🎃

Join us for a day of Halloween-filled fun and see our animals get into the spooky season spirit. You won't want to miss out on all our sweets, treats, giveaways, raffles, and more. All “buoys” and “ghouls” in costume will get 50% off admission with a paying adult. This Halloween party is free with admission. 🦇🪸🧹

Later tonight, be sure to stop by our Haunted Tree House, featuring FIVE levels of kid-friendly Halloween fun! Our Haunted Tree House is every Friday and Saturday night in October! Buy tickets now at: longislandaquarium.com/experiences/haunted-tree-house/.

10/23/2026

We hope to see you all at our Bats, Barnacles, & Broomsticks Halloween Party tomorrow! 🐠💀

You won't want to miss out on all our sweets, treats, giveaways, raffles, and more. All “buoys” and “ghouls” in costume will get 50% off admission with a paying adult. This Halloween party is free with admission. 🦇🪸🧹

Learn more at: longislandaquarium.com/events/bats-barnacles-broomsticks-halloween-party/

Address

431 E Main Street
Riverhead, NY
11901

Opening Hours

Monday	10am - 4pm
Tuesday	10am - 4pm
Wednesday	10am - 4pm
Thursday	10am - 4pm
Friday	10am - 4pm
Saturday	10am - 5pm
Sunday	10am - 5pm

Telephone

+16312089200

Website

http://www.longislandaquarium.com/

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